EP 3970853 A4 20230201 - CATALYST, CATALYST PRODUCT AND CATALYST PRODUCTION METHOD
Title (en)
CATALYST, CATALYST PRODUCT AND CATALYST PRODUCTION METHOD
Title (de)
KATALYSATOR, KATALYSATORPRODUKT UND VERFAHREN ZUR HERSTELLUNG EINES KATALYSATORS
Title (fr)
CATALYSEUR, PRODUIT CATALYTIQUE ET PROCÉDÉ D'UN CATALYSEUR
Publication
Application
Priority
- JP 2019092173 A 20190515
- JP 2020018211 W 20200430
Abstract (en)
[origin: EP3970853A1] For NOx-purification of an SCR exhaust gas post-treatment system, no SCR catalyst existed which has a low temperature activity at an exhaust gas temperature of 200 °C to 350 °C and a high temperature activity at an exhaust gas temperature of 350 °C to 500 °C, wherein both of the activities are high in a balanced manner. The present invention provides an SCR catalyst which has a low temperature activity at an exhaust gas temperature of 200 °C to 350 °C and a high temperature activity at an exhaust gas temperature of 350 °C to 500 °C, wherein both of the activities are high in a balanced manner, wherein the SCR catalyst further enables the high activities to be maintained even after aging with hot water. The SCR catalyst contains a phosphorus oxide of about 15 to about 35% by mass, wherein a molar proportion of silica to alumina is from about 1.9 to about 5.2, and wherein the catalyst further includes a copper-introduced zeolite with an atomic proportion of copper to aluminum of about 0.05 to about 0.1.
IPC 8 full level
B01J 29/85 (2006.01); B01D 53/94 (2006.01); B01J 29/76 (2006.01); B01J 29/80 (2006.01); B01J 35/04 (2006.01); B01J 37/02 (2006.01); B01J 37/04 (2006.01)
CPC (source: EP)
B01D 53/9418 (2013.01); B01J 29/76 (2013.01); B01J 29/763 (2013.01); B01J 29/80 (2013.01); B01J 29/85 (2013.01); B01J 35/56 (2024.01); B01J 37/0215 (2013.01); B01J 37/04 (2013.01); B01D 2251/2062 (2013.01); B01D 2255/20761 (2013.01); B01D 2255/50 (2013.01); B01D 2258/012 (2013.01); B01J 2229/186 (2013.01); B01J 2229/42 (2013.01); Y02A 50/20 (2017.12); Y02T 10/12 (2013.01)
Citation (search report)
- [A] US 2011300028 A1 20111208 - BULL IVOR [US], et al
- [A] WO 2018219700 A1 20181206 - IFP ENERGIES NOW [FR]
- See references of WO 2020230639A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 3970853 A1 20220323; EP 3970853 A4 20230201; CN 113766973 A 20211207; JP 2020185540 A 20201119; JP 7194431 B2 20221222; WO 2020230639 A1 20201119
DOCDB simple family (application)
EP 20805890 A 20200430; CN 202080028655 A 20200430; JP 2019092173 A 20190515; JP 2020018211 W 20200430